@rgsros: "Hi,
Thanks for advice and help; appreciate it.
One more question:
Error msgs seem to be (very)intermittent.
For the Dealership to get the codes, and a diagnosis, would the error 
message actually have to be appearing, or can they grab the error code 
at any time ?
Would it be the same code in either case ?
Regards, and thanks,
Bob
<quote>"
    @esp: ""Bob" <email_address> wrote in message 
news:hsm42d$s4d$<email_address>
<quote>
The codes are in the computer of some period of time.   I'm not sure what 
the period is or number of cycles though. "
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